<template>
    <transition name="slide">
      <music-list :title="title" :bg-image="bgImage" :songs="songs"></music-list>
    </transition>
</template>

<script type="text/ecmascript-6">
import MusicList from 'components/music-list/music-list'
import {getSingerDetail} from 'api/singer'
import {ERR_OK} from 'api/config'
import {createSong, isValidMusic, processSongsUrl} from 'common/js/song'
import {mapGetters} from 'vuex'
export default {
  computed: {
    title() {
      return this.singer.name
    },
    bgImage() {
      return this.singer.avatar
    },
    ...mapGetters([
      'singer'
    ])
  },
  data() {
    return {
      songs: []
    }
  },
  created() {
    this._getDetail()
  },
  methods: {
    _getDetail() {
      if (!this.singer.id) {
        this.$router.push('/singer')
        return
      }
      getSingerDetail(this.singer.id).then((res) => {
        if (res.code === ERR_OK) {
          processSongsUrl(this._normalizeSongs(res.data.list)).then((songs) => {
            this.songs = songs
          })
        }
      })
    },
    _normalizeSongs(list) {
      let ret = []
      list.forEach((item) => {
        let {musicData} = item
        if (isValidMusic(musicData)) {
          ret.push(createSong(musicData))
        }
      })
      return ret
    }
  },
  components: {
    MusicList
  }
}
</script>

<style scoped lang='less'>
  @import '~common/less/variable';
  .slide-enter-active,.slide-leave-active{
    transition: all 0.3s;
  }
  .slide-enter,.slide-leave-to{
    transform: translate3d(100%, 0, 0);
  }
</style>
